The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We experimentally demonstrate a compact optical add-drop multiplexer based on misaligned sidewall Bragg gratings in a MZI. We achieved 51dB transmission isolation and 5nm 3-dB bandwidth with a footprint of 400 μm × 125 μm.
We demonstrate a polarization independent adiabatic 3-dB coupler for the silicon-on-insulator platform, with a measured bandwidth of 100 nm and power splitting ratios of 3 ± 0.7dB for both the transverse electric and transverse magnetic modes.
Energy saving is a main concern of telecom operators to reduce TCO and improve market competition. Normally, single generator reaches the best fuel consumption rate when it works under 70%–85% loading rate. But in certain scenarios, the capacity of existing generator is not enough, thus more than one generator will work in parallel in the same hybrid power supply system; for instance in site sharing...
We demonstrate a compact, single-etched sub-wavelength grating coupler for the O-band application, which has a measured insertion loss of −4 dB, a 3-dB bandwidth of 39 nm, back reflections below −20 dB, and a design footprint of 20um × 40um.
Matched mode processing (MMP), which introduces the acoustic propagation model in the complex underwater waveguides, has been one of the promising directions in source localization. The well-known Capon method is often used for MMP due to the capability of high resolution; however, its performance may degrade significantly in the presence of mismatch. There are various mismatches such as environmental...
Aiming at improving the radiation direction of the radiating high altitude nuclear electromagnetic pulse(NEMP) simulator, Transverse electromagnetic(TEM) horn antenna is adopted as the radiating antenna for the simulator in this paper. Several structures are simulated using the CST microwave studios software. Results suggest that TEM horn antenna can be used by NEMP simulators with some limitations;...
The design and analysis of a class of dual-band frequency selective surfaces (FSSs) of planar dipole type are discussed, which can operate in co- or cross-transmission modes. The dual band FSSs are achieved by conductively coupled dipole pairs, and the transmission mode is determined by the orientation of the radiating dipole elements. Both simulation and experimental results show that the dual-band...
We demonstrate a broadband sub-wavelength grating coupler for the O-band application, which has a simulated coupling efficiency of −3.3 dB with 3-dB bandwidth of 78 nm and a measured coupling efficiency of −4.5 dB with a 3-dB bandwidth of 65 nm for fundamental TE mode.
Photoluminescence (PL) of Gd-doped silica in the ultraviolet (UV) is investigated. The strong emission detected at 314 nm is assigned to the 6P7/2 to 8S7/2 transition under excitation of 6DJ, 6IJ, and 6PJ energy levels of the Gd3+. After glass densified by rapid thermal treatment (RTT), significant enhanced luminescence and decreased loss covering the UV band are observed.
A previous study on long term reproducibility [1] demonstrated that CAMECA Wf can delivered the relative standard deviation (RSD) of the relative sensitivity factors (RSF) of boron (B) are typically 3.7%. Above results show that deviation can be estimated without testing the standards. This paper will demonstrate that the SIMS RSD depend significantly on the species concentration.
A surface layer formation by Cs+ bombardment was observed during ultra-thin oxynitride gate dielectrics depth profiling. A significant thickness change relative to ultra-thin layer of oxynitride was noticed when testing a bombarded sample after a period of time. Cs, O and N depth profiles were examined by Dynamic Secondary Ion Mass Spectrometry (DSIMS). The bombarded sample and new sample were investigated...
Slot machines are the most popular facility in casinos worldwide. With the advancement of computer technology, the operating reel spinning of the current slot machine is presented by computer software emulation instead of rotating mechanical iron reels. The reel strip table of a slot machine has many special pictures embedded for different attractive themes. Each slot machine achieves a hit rate based...
Introduction of a dual beam (DB) millisecond (mSec) or nanosecond (nSec laser annealing in contact module results in a drastic reduction of contact resistivity. Dependence of this benefit on laser annealing parameters is detailed. The annealing power/temperature condition needed for initiating solid or liquid phase epitaxy (SPE, LPE defines a lower process boundary, while impact of laser annealing...
A novel high-data-rate low-power spectrum-efficient 60GHz Bi-Phase-On-Off-Keying (BPOOK) transceiver is presented for indoor short-range IoT application targeting the common 60GHz spectrum mask used in IEEE 802.11ad/ WiGig standards. By employing bi-phase encoder and double-balanced mixer, the BPOOK transmitter spectrum is efficient to be compliant with 2-channel bonding spectrum mask. The proposed...
This paper presents a dual-band 2×2 WiFi transceiver in 28nm bulk CMOS. Achieved receiver and transmitter EVM floor at 5GHz for 160MHz per channel are −35dB and −33dB, respectively. The 2.4GHz integrated PA provides 26.5dBm saturated output power while its 5GHz counterpart delivers 26dBm. The 2.4GHz receiver features mixer first architecture while the transmitter includes a 2nd harmonic notch for...
Because of power consumption in free space, the received radio frequency signal is weak, which leads to a lack of energy collection in simultaneously wireless information and power transfer system, namely SWIPT system. The PS receiving mode is commonly used in SWIPT system, but the circuit design of PS receiving mode is complex, and the power of received radio frequency signal is small. If the power...
We propose a novel computer recognition system with magnifying narrow-band imaging (NBI) colonoscopy to predict pathologic diagnosis of colorectal neoplasms. In this work, we propose a system based on the sparse representation of features derived from the Bank of Binarized Statistical Image Features (B-BSIF). The BSIF code of a pixel is considered as a local descriptor of the image intensity pattern...
In this paper, we propose a three-dimensional antenna resonator consisting of a pair of inverted L-shaped wires sharing a common part, a continuous metallic ground slab, and a coaxial port loaded with a lumped matching resistor to mimic the input impedance of a rectifier. Such a resonator array can function as an efficient RF energy receiving aperture in the long-distance wireless power transmission...
A control-oriented reaction-based combustion model is implemented and used to simulate the combustion process in a diesel engine. The model integrates a homogeneous thermodynamic system with a two-step chemical reaction mechanism that consists of six species. The accuracy of the model is evaluated by comparing with experimental data from a GM 6.6L, 8 cylinder Duramax engine. The model is calibrated...
Massively Multiplayer Online Role-playing Games (MMORPGs) feature a large number of players socially interacting with one another in an immersive gaming environment. A successful MMORPG should engage players and meet their needs to achieve different categories of gratifications. Research on the evolution of player social interaction network and the dynamics of inter-player intimacy could provide insights...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.